1. Acronyms

The following acronyms are often used in the source code and the documentation.

These acronyms will often occur in lower case due to coding conventions. When a class represents just one of these terms, longer names may be used for the sake of clarity. Unit conversion constants are not abbreviated.

• AP1roG – Antisymmetric Product of 1-reference orbital Geminal

• CC – Coupled Cluster

• DM – Density Matrix

• EOM – Equation of Motion

• RHF – Restricted Hartree Fock

• KIN – Kinetic Energy

• LCC – Linearized Coupled Cluster

• LF – Linear Algebra Factory, i.e. class that bundles a set of related linear algebra routines

• MP2 – Moller-Plesset perturbation theory of second order

• NA – Nuclear Attraction

• OLP – Overlap

• pCCD – pair Coupled Cluster Doubles

• RDM – Reduced Density Matrix

• UHF – Unrestricted Hartree Fock